1 Muscle name: Platysma
Origin: Fascia that covers deltoid and pectoralis major muscles
Insertion: Mandible
Action: Depresses mandible; lowers the inferior lips
2 Muscle name: Depressor labii inferioris
Origin: Mental tubercle and oblique line of mandible
Insertion: Skin of lower lip
Action: Depresses the lower lip
3 Muscle name: Orbicularis oris
Origin: Muscle fibers surrounding opening of mouth
Insertion: Skin around the lips
Action: Controls the movement of the lips
4 Muscle name: Corrugator supercilii
Origin: Medial end of the superciliary arch of frontal bone
Insertion: Skin of eyebrow
Action: Draws eyebrow inferiorly and creates vertical wrinkles on the bridge of the nose
5 Muscle name: Orbicularis oculi
Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes eyelids
6 Muscle name: Occipitofrontalis
Origin: Epicranial aponeurosis
Insertion: Skin superior to supraorbital margin
Action: Raises eyebrows and wrinkles skin of forehead horizontally